等截面悬链线无铰拱固有频率的试验研究与简化计算

Experimental research and simplified calculation of natural frequencies of prismatic catenary fixed arch

以等截面悬链线拱为研究对象 ,从模型实测、有限元分析与瑞雷法计算三方面给出其固有频率 。

In this paper,the natural frequencies of a prismatic catenary fixed arch model are obtained by means of dynamic experiment,FEM and Reileigh method.A new method to formulate the function of vibration mode,to calculate the low frequencies by Reileigh method,is put forward.